The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/polar-ice-caps-how-high-will-the-sea-level-rise.aspx DRF english version en-US https://www.cea.fr/_layouts/15/images/i2i/icon-144x144-1033.png The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english Shifting the acidity peak from winter to summer in the Arctic Ocean and the threat to its ecosystem https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/shifting-the-acidity-peak-from-winter-to-summer-in-the-arctic-ocean-and-the-threat-to-its-ecosystem.aspx A Franco-German study coordinated by the LSCE (CEA-CNRS-UVSQ) estimates that climate change could shift the peak in Arctic Ocean acidity from winter to summer, which would be disruptive to the ecosystem. Impact of climate change ; Oceanography ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Wed, 05 Oct 2022 10:00:00 GMT Plutonium isotopy as a dating tool to reconstruct the recent history of land use in South America https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/plutonium-isotopy-as-a-dating-tool-to-reconstruct-the-recent-history-of-land-use-in-south-america.aspx A French-South American consortium led by the LSCE (CEA-CNRS-UVSQ) is working to explain the chronology and spatial distribution of radionuclides deposited in South America following atmospheric nuclear testing. Their research, based on measurements of plutonium isotopes in soil and sediment samples, will enable the precise reconstruction of the evolution in land use since the 1960s. Environment ; Agronomy ; Radioactivity ; Dating ; Impact of climate change general public ; Journalists ; Researchers LSCE Scientific result ; Découvertes et avancées Mon, 11 Jul 2022 10:00:00 GMT Discovery of significant methane leaks linked to the oil and gas industry https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/discovery-of-significant-methane-leaks-linked-to-the-oil-and-gas-industry.aspx A new international study coordinated by the LSCE (CEA-CNRS-UVSQ) has revealed hundreds of very large methane leaks from oil and gas production facilities. This work draws on data collected by the European satellite Sentinel-5P. Greenhouse effect ; Impact of climate change general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 04 Feb 2022 11:00:00 GMT The effectiveness of bioenergy crops must be properly assessed https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/the-effectiveness-of-bioenergy-crops-must-be-properly-assessed.aspx According to a collaboration coordinated by the LSCE (CEA-CNRS-UVSQ), it is necessary to take into account the biophysical effects of bioenergy crops (including CO2 capture and sequestration) in order to properly assess their effectiveness in the fight against climate change. Bioenergy ; Climate ; Climatic models general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Tue, 21 Dec 2021 11:00:00 GMT Climate: N2O emissions from soil can be effectively reduced https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/climate--emissions-from-soil-can-be-effectively-reduced.aspx According to a Peking University study involving the LSCE (CEA-CNRS-UVSQ), there are “hot spots” of soil-based emissions of nitrous oxide (N2O), a very powerful greenhouse gas. Just by focusing on those soils that receive excessive nitrogen fertilizer deposits, it should be possible to reduce total nitrous oxide emissions from soils by nearly 20%. Climate ; Agronomy ; Climatic models general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 22 Oct 2021 10:00:00 GMT Alpaga : the search for mountain snow microalgae https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/ALPALGA-the-search-for-mountain-snow-microalgae.aspx Environment ; Biodiversity ; Climate ; Impact of climate change News ; Press release ; Focus CEA;Mountain;Snow;UGA;CNRS;microalgue;inrae; Mon, 07 Jun 2021 10:00:00 GMT Optimizing the cost of greenhouse gas mitigation by adjusting CO2 equivalents https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/optimizing-the-cost-of-greenhouse-gas-mitigation-by-adjusting-co-equivalents.aspx Different greenhouse gases do not have the same levels of persistence in the atmosphere. The calculation of their CO2 equivalent emissions therefore depends on the time periods in question. According to a collaboration led by the LSCE (CEA-CNRS-UVSQ), adjusting these durations will make it possible to better identify the most economically advantageous policies for reducing warming. Greenhouse effect ; Impact of climate change ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Mon, 31 May 2021 10:00:00 GMT The Brazilian Amazon rainforest has been losing its carbon stock over the past decade https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/the-brazilian-amazon-rainforest-has-been-losing-its-carbon-stock-over-the-past-decade.aspx According to a study involving scientists from the University of Oklahoma (USA), INRAE and the LSCE (CEA-CNRS-UVSQ), the Brazilian Amazon rainforest has released more carbon than it has absorbed over the last ten years. The cause: the degradation of the forest due to human activities and climate change. Carbon cycle ; Impact of climate change ; Climate ; Satellites general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Fri, 30 Apr 2021 10:00:00 GMT What are the contributions of different countries to climate change? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/what-are-the-contributions-of-different-countries-to-climate-change.aspx An international collaboration of climate researchers including the LSCE (CEA-CNRS-UVSQ) is using a model of the Earth System to determine the different regional contributions to global warming, as well as the individual factors that modify and amplify it, such as CO2 emissions, or, on the opposite, by temporarily attenuating it, such as aerosols. This model represents a valuable tool for implementing a responsible climate policy. Climate ; Climatic models general public ; Journalists ; Researchers Découvertes et avancées ; Scientific result Tue, 06 Apr 2021 10:00:00 GMT Paleoclimatic simulations PMIP4: First analyses https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/paleoclimatic-simulations-pmip--first-analyses.aspx The PMIP (Paleoclimate Modelling Intercomparison Project) collaboration publishes the first results of its 4th "phase", for the study of the climates of the Middle Holocene (6,000 years ago) and the last interglacial (127,000 years ago). These periods are characterized by a greater than average seasonality in the northern hemisphere, which increases the amplitude of the seasonal cycle of boreal temperatures and strengthens the monsoons in the north. Paleoclimates ; Climatic models ; Climate general public ; Journalists ; Researchers LSCE Scientific result ; International Mon, 08 Feb 2021 11:00:00 GMT North-South Prize of the Council of Europe: the “Mediterranean IPCC” sounds the alarm! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/north-south-prize-of-the-council-of-europe-the-mediterranean-ipcc-sounds-the-alarm.aspx Created in 2015, the independent network MedECC (Mediterranean Experts on Climate and Environmental Change) has published its first evaluation report, MAR1 (Mediterranean Assessment Report), accompanied by a summary for policy-makers. This publication earned the group the Council of Europe’s North-South 2020 Prize. Read on for a close-up on ‘Ecosystems’, a chapter from the report that features an LSCE researcher as “lead author”. Climate ; Impact of climate change ; Environment general public ; Journalists ; Researchers LSCE Prizes and awards ; Scientific result ; Europe Wed, 13 Jan 2021 11:00:00 GMT Ocean circulation would have contributed to the first colonization of North America https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/ocean-circulation-would-have-contributed-to-the-first-colonization-of-north-america.aspx According to an international study involving researchers from the LSCE (CEA-CNRS-UVSQ), a significant change in ocean currents in the North Pacific would have favored the first human migration from Asia to North America, at the end of the last ice age. Paleoclimates ; Climatic models ; Oceanography general public ; Journalists ; Researchers LSCE Scientific result Thu, 10 Dec 2020 11:00:00 GMT Polar ice caps: how high will the sea level rise? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/polar-ice-caps-how-high-will-the-sea-level-rise.aspx Publication of a large set of interdisciplinary simulations to which researchers from LSCE (CEA-CNRS-UVSQ) have contributed offers an opportunity to assess the future impact of the melting of the polar ice caps. What are the trends and uncertainties? Impact of climate change ; Climatic models general public ; Journalists ; Researchers LSCE Scientific result ; International Fri, 18 Sep 2020 10:00:00 GMT The low value of climate sensitivity is revised upwards https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/the-low-value-of-climate-sensitivity-is-revised-upwards-.aspx According to an international collaboration involving the LSCE (CEA-CNRS-UVSQ), the doubling of atmospheric CO2 content compared to the pre-industrial era would “probably” warm the earth between 2.6°C to 3.9°C. This assessment – the best to date – is based on three independent data sources that do not use climate models. Climatic models ; Climate ; Impact of climate change general public ; Journalists ; Researchers LSCE Scientific result ; International Thu, 30 Jul 2020 10:00:00 GMT The Arctic Ocean, cradle of viral biodiversity https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/The-Arctic-Ocean,-cradle-of-viral-biodiversity.aspx Fundamental Research ; Cellular mechanisms ; Impact of climate change ; Climate ; Oceanography Press release ; Scientific result ; Focus Mon, 29 Apr 2019 10:00:00 GMT Southern CO2 versus Northern CO2: the Northern vegetation makes the difference https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/southern-co-versus-northern-co-the-northern-vegetation-makes-the-difference.aspx A team of international researchers coordinated by the LSCE has been able to retrace for the first time the evolution of the Northern Hemisphere land carbon sink over more than five decades, based on differential CO2 measurements collected since 1958 in both hemispheres. This is a precious indicator to understand how to encourage carbon sequestration in the ground and the biomass. Carbon cycle ; Climatic models ; Greenhouse effect ; Impact of climate change general public ; Journalists ; Researchers LSCE Scientific result Thu, 04 Apr 2019 10:00:00 GMT VERIFYing greenhouse gas emissions monitoring https://www.cea.fr/drf/english/Pages/News/Institutional-news/2018/VERIFYing-greenhouse-gas-emissions-monitoring.aspx The European project VERIFY, coordinated by the CEA, aims to provide the European Commission with a system to monitor greenhouse gas emissions declarations submitted by each country under the United Nations Framework Convention on climate change. Environment ; Climate ; Recovery of CO2 ; Carbon cycle ; Greenhouse effect ; Impact of climate change ; Science & society ; Tools & research instruments Journalists ; Researchers ; general public ; Companies LSCE News ; Newsletter ; CEA Research News ; European & international partnerships Greenhouse;energy union and climate;H2020;Paris clilmate change agreement;IPCC;greenhouse gas emissions; Tue, 10 Apr 2018 10:00:00 GMT Ocean acidity: what impact will greater seasonal variations have? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Ocean-acidity-what-impact-will-greater-seasonal-variations-have.aspx According to an international collaboration involving the LSCE, seasonal variations in ocean acidity will be more pronounced at the end of the century than today and could even double. The seasonality of pH, until now considered favorable to the adaptation of marine organisms to global warming, could then prove to have a deleterious effect. This must now be taken into account in climate models. Impact of climate change Researchers ; general public ; Journalists LSCE Scientific result Fri, 02 Feb 2018 11:00:00 GMT A “Statistical Physics” of Extreme Weather Events https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/a-statistical-physics-of-extreme-weather-events.aspx Combining extreme value theory and chaos theory, researchers from LSCE have developed digital tools to determine the quality and rarity of a weather forecast based on atmospheric data collected since 1948. Their near-instantaneous ability to analyze atmospheric circulation could ultimately allow for better prediction of extreme weather events. Climatic models Researchers ; general public ; Journalists DRF Scientific result Tue, 16 May 2017 10:00:00 GMT Rice Yield Losses Expected Under Future Global Warming https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/rice-yield-losses-expected-under-future-global-warming.aspx As the staple food for more than half of the world’s population, rice is expected to drop considerably in yield in the event of significant climate change, necessitating CO2 fertilization and the genetic selection of adaptable species/ Climate ; Impact of climate change ; Simulation & modelling general public ; Journalists ; Researchers LSCE Scientific result Tue, 07 Mar 2017 11:00:00 GMT Global Warming Will Require Increased Irrigation in the US https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/global-warming-will-require-increased-irrigation-in-the-us.aspx According to agronomic and climatological models, maize and soybean yields decline as soon as the temperature exceeds 30°C. Wheat appears to be more resistant. Increased irrigation can help to avoid such loss. Climate ; Impact of climate change ; Simulation & modelling general public ; Journalists ; Researchers LSCE Scientific result Mon, 27 Feb 2017 11:00:00 GMT The Consequences of Global Warming on the Wheat Yield in China https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/the-consequences-of-global-warming-on-the-wheat-yield-in-china.aspx According to estimates based on experimental observations and computer simulations, wheat yields in China are expected to be altered by upcoming global warming. Climate ; Impact of climate change ; Simulation & modelling general public ; Journalists ; Researchers LSCE Scientific result Mon, 20 Feb 2017 11:00:00 GMT The oak genome has been sequenced https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/oak-genome-sequenced.aspx Research teams from INRA and the CEA have just sequenced for the first time the genome of the pedunculate oak tree, which is widely distributed throughout the northern hemisphere. This work will improve our understanding of the adaptive mechanisms of trees to environmental variations, and will thus provide elements that can be used to anticipate their responses to climate change. Genomics ; Impact of climate change Fontenay-aux-Roses Scientific result Mon, 11 May 2015 10:00:00 GMT